[U-Boot] SPI flash writing

Mike Frysinger vapier at gentoo.org
Wed Mar 14 03:16:35 CET 2012

On Tuesday 13 March 2012 17:31:02 Falauto, Gerlando wrote:
> From: Mike Frysinger [mailto:vapier at gentoo.org]
> >On Tuesday 13 March 2012 16:17:52 Jason Cooper wrote:
> >> On Tue, Mar 13, 2012 at 04:11:29PM -0400, Mike Frysinger wrote:
> >> > On Tuesday 13 March 2012 14:25:07 Gerlando Falauto wrote:
> >> > > 2) an out-of-boundary-check againts the flash size so at least a
> >> > > warning is issued when you use too big a size value
> >> > 
> >> > i'm not sure about this.  if you want to do size checking, then enable
> >> > the hush shell and do it in a script.
> >> 
> >> Is there a programatic way to get the size of the flash at runtime from
> >> the hush script?
> >
> >no.  question is, do you really need that ?  sounds like you know ahead of
> >time how big the space is for u-boot, so the size of the flash doesn't
> >matter.
> Can't the same command also be used for burning something *other than*
> u-boot (e.g. a kernel, config section, or something like that)? So the
> size of the flash *does matter*, doesn't it?

you have to show how it actually does matter.  when you deploy a board and 
programming the flash directly, you don't let the regions grow arbitrarily.  
you know how big the space for u-boot, or the kernel, or dedicated config 
space, or anything else is going to be.  if you want to arbitrarily append 
things, then you're going to use a filesystem.
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